Abstract: A method of drying a lactulose solution comprises introducing the solution into a vacuum chamber at elevated temperature and at reduced pressure so that the solution forms a foam, drying the foam under reduced pressure, and milling or grinding or breaking the dried foam into powder.
Type:
Grant
Filed:
December 13, 1999
Date of Patent:
April 12, 2005
Assignee:
Relax Limited
Inventors:
Alan Kenneth Greenwood, Anthony Christopher Allen, Jaap Van Dijk